Valve.



M. U. SGHWEINERT & H. P.KB.APT.

VALVE.

APPLICATION FILED PEB. 1o, 1909.

ITNESSES:

certain new lower end of which engages a MXIMLIAN CHARLES SCHWEINERT, OF WEST HOBOKEN, NEW JERSEY, AND HENRY P. KRAFT, 0F NEW YORK, N. Y.

VALVE.

roamed.

To all whom .it mag/concern:

Be it known that'we, MAXIMILIAN CHARLES SoHwEINER'r,

Hudson and State of New HENRY P. KRAFT, residing in the borough of Brooklyn', in the county of Kings, city and State of New York, citizens of lthe United, States, have invented and useful Improvements in Valves, of which the following is a specifi'- cation.

Jersey, and

This invention aims to provide certain improvements in valves adapted for various uses, and especially fo'r use in connection with vehicle tires. l v The valve is of the character designed to permit the actuation, by the pressure'within the tire, of pressure indicating or other means.

The accompanying drawings illustrate an embodiment of the invention. 5 Figure 1 is a longitudinal section of a valve mounted on a tire in the position which'it assumes while air is being pumped throughit; Fig. 2 1s a similar view in the position assumed after the tire is inflated; Fig. '3 is a -side elevation of the upper part of the valve corresponding to the position of Fig. l.

The valve through which air is introduced maybe of any known or suitable design. In the embodiment of the invention illustrated, the valve comprises a shell A, and a valve bodyV B 'which seats against a hollow seat C and has stems D and `1L project-ing above and -below it, and a spring F holding it up to its seat. The shell A and parts therein are arranged to slide in an outer tube or casing 4G with a good sliding fit, being held from turning by a screwH entering a longitudinal groove in the shell A. Normally the shell is held I down by means of a sprlng J consisting of a compressed coil the K screwed on the lower end of a tube L which forms an extension of the shell A of the valve; the upper end of,thespring reacting against a ring M which is held in position in the outer tube by ymeans of one or more screws N.

`When the pressure Within the tire 0 becomes suciently great, it will force up the valve and with it against the resistance of the spring J. The valve shell A will therefore project upward Sp'ecication of Letters Patent. Application filed February 1o, 1909. serial No.

residing in West Hoboken, in; the county of `any other suitable point.

packed ring the tube L and collar K` actly the pressure represented by differenti positlons of the latter.

ln order to prevent the escape of air between the outer tube G and the valve shell A, when introducing the compressed air, any suitable packing may be provided between the .collar and t e tube G as shown, or at Preferably a packing is provided Within the tire which cuts ofi absolutely any communicationbetween the space within the tire and the space outside of the same when the valve yields to an outward pressure, this cut-od' device being adjustable so tha-t it may be arranged to cut off the escape of air at any Vdesired pressure. This cut oil' device acts in connection with.a head P of the outer tube G, which head lies within the tire, the latter being clamped between said head and the usual clamping devices on the outside of the tire. The closure consists of an annular valve seat Q on the member P, and an annular packing ring R carried in a groove in a device S, and adjustable relatively to the valve by screwing said device up or down on the tube L; a set-nut T serving to hold the device S in its position of adjustment. The device S has a long tubular central portion threaded on the tube L, and has a bottom no escape of air through the member S and by. way of the screwtlieads to the space between the tube L and the outer tube G. Therefore when the pressure in the tube corresponds to that for which the closing device is set, the parts will assume the position of Fig. 2, and the seat Q and packing ring R will cut olf all communication from the space within the tire to the outside space. In pumping air into the tire, the air is admitted through an opening V above the set-nut T, thepa'rts assuming the positionvof Fig. l under the influence of the air pressure from the pump.

What we claim is:-A

1. An ination valve for tires, having an inner tubular portion adapted to extend into rammed Nov. ae, raie.

the tire, an outer tubular portion through which said inner portion passes, an inwardly opening valve in said inner portion through which the tire is inflated, a spring for pressing said inner portion into the tire and yielding to the pressure within the tire, and means within the tire for entirely cutting olf the space therein from the outside air.

2. In combination, an admission valve having a tubular portion- L adapted to extend within a tire, an outer tube G clamped upon the tire, ,a packing between said tubular portion and said outer tube, a valve in said tubular portion L through which the tire is inflated, said tube L being movable outwardly in the'tube G by air pressure within the tire, and a device surroundmg and extending vacross the inner end of said tube L and closing against a part of said outer tube G whenthe tube L is forced outward by the air pressure.

l3. In combination, an admission valve havin a tube L, an outer tube G having a head a packing between said tubular portion and said outer tube, a valve in said tube L to which the tire is inflated, said tube L being movable outwardly in the tube G by air pressure within the tire, and a closing device S formino a tight closure against a part of said headD when said tube L is forced outward by air pressure and surrounding and extending over the inner end of said tube L.

4. In combination, an admission valve having a tube L, an outer tube G having a head I, a valve in saidv tube L through which. the tire is inflated, said tube L being movable outwardly in the tube G by air pressure within the tire, and a devlce S adapted to close against a part of said head P when said tube L is forced outward by air pressure, said device ,S being adjustable on the tube L and surrounding and extend- 'ing over the inner end of said tube L.

In witness whereof, we have hereunto signed our names in the presence of two subscribing witnesses. MAXIMILIAN CHARLES SGHWEINERT.

, HENRY? KRAFT. Witnesses:

DOMINGO A. UsiNA, vFimo Wurm 

